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About ravi.sankar.duvvuri

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  • Name
    D Ravi Sankar
  • Company
    Intervet India Pvt. Ltd.
  • Designation
    Manager - Projects


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  1. Hi VK, Hope I can rejuvenate the OP and continue it. I am interested in three of the topics mentioned in your OP and I am not clear about the way we take up those issues in six sigma. I try to put my thoughts here so that you can help me correct where ever I am missing something. The first one is improving CSI. I can't think beyond this point that improving customer ratings is a logical process and those points where customer is unsatisfied is clearly visible without having to go through any data analysis. As far as weightages are concerned, it is company's philosophy as to what is more imp
  2. Hi Shantanu, That would be great. Can you give me some online references so that I can do some homework and come prepared? Secondly, non normality of this parrticular data seems dubious to me as similar data in next process step seems to be normal. Any suggestions regarding this would be quite helpful. Regards, Ravi
  3. Greetings, I am trying to analyse variations in a biological process. I used Anderson-Darling test and found out that the data is not normal. The sampling interval is one day and chances of manipulating data are very rare. The data is presented in the excel file (Count.xls) I attached here. The actual data points are of the form a*10^6. Since, I initially considered only the multiples, I then checked for lognormality but the same result occured. Despite that I ran xmr chart and the outliers seem to coincide with the ones that can be analysed with subject matter knowledge. I read from man
  4. There is nothing much to disagree with you after my 12 years stint with pharma (in projects and maintenance). Nevertheless, fair comparison can't be done without taking human factor into picture. Whether it is cGMP or ISO the game is to get the certification and these are snap shot audits. You can be successful even without having to fully complying the standards. On the other hand, six sigma success is only visible if the company benefits from its practices and there is no intermediate way.
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